Android Open Source - Ada-Framework-Maven Data Binder

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GNU Lesser General Public License
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Java Source Code

/**
   Copyright Mob&Me 2012 (@MobAndMe)
//w w  w .  j a v a 2s  .  com
   Licensed under the LGPL Lesser General Public License, Version 3.0 (the "License"),  
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.gnu.org/licenses/lgpl.html

   Unless required by applicable law or agreed to in writing, software 
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
   
   Website: http://adaframework.com
   Contact: Txus Ballesteros <txus.ballesteros@mobandme.com>
*/

package com.mobandme.ada;

import java.lang.reflect.InvocationTargetException;
import java.text.SimpleDateFormat;
import java.util.Date;

import com.mobandme.ada.exceptions.AdaFrameworkException;
import com.mobandme.ada.exceptions.InaccessibleFieldException;

import android.R.bool;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.RadioButton;
import android.widget.RatingBar;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.ImageView;
import android.widget.ToggleButton;

/**
 * Class dedicated to binding data between the Entities and the User Interface.
 * Extend of this class to make your custom DataBinders.
 * @version 2.4.3
 * @author Mob&Me
 */
public class DataBinder {
  /**
   * Define Data Binding direction between Entity and UI.
   *      Entity --> UI Controls Layer
   */
  public static final int BINDING_ENTITY_TO_UI = 1;
  
  /**
   * Define Data Binding direction between UI and Entity.
   *      UI Controls Layer --> Entity
   */
  public static final int BINDING_UI_TO_ENTITY = 2;
  
  /**
   * Parse and Casting object value.
   * @param pBinding
   * @param pValue
   * @return
   */
  private Object parseValue(DataBinding pBinding, Object pValue) {
    Object returnedValue = null;
    
    if(pValue != null) {
      final Class<?> entityFielType = pBinding.EntityField.getType();
      
      if (entityFielType == String.class) {
        if (pValue.getClass() == String.class) {
          returnedValue = (String)pValue;
        } else {
          returnedValue = pValue.toString();
        }
      } else if (entityFielType == Integer.class || entityFielType == int.class) {
        if (pValue.getClass() == String.class) {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Integer.parseInt((String)pValue);
          }
        } else {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Integer.parseInt(pValue.toString());
          }
        }
      } else if (entityFielType == Long.class || entityFielType == long.class) {
        if (pValue.getClass() == String.class) {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Long.parseLong((String)pValue);
          }
        } else {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Long.parseLong(pValue.toString());
          }
        }
      } else if (entityFielType == Double.class || entityFielType == double.class) {
        if (pValue.getClass() == String.class) {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Double.parseDouble((String)pValue);
          }
        } else {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Double.parseDouble(pValue.toString());
          }
        }
      }  else if (entityFielType == Float.class || entityFielType == float.class) {
        if (pValue.getClass() == String.class) {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Float.parseFloat((String)pValue);
          }
        } else {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Float.parseFloat(pValue.toString());
          }
        }
      }  else if (entityFielType == Short.class || entityFielType == short.class) {
        if (pValue.getClass() == String.class) {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Short.parseShort((String)pValue);
          }
        } else {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Short.parseShort(pValue.toString());
          }
        }
      }  else if (entityFielType == Boolean.class || entityFielType == boolean.class || entityFielType == bool.class) {
        if (pValue.getClass() == String.class) {
          if (!((String)pValue).trim().equals("")) {
            returnedValue = Boolean.parseBoolean((String)pValue);
          }
        } else {
          if (pValue.toString().trim() != "") {
            returnedValue = Boolean.parseBoolean(pValue.toString());
          }
        }
      }  else if (entityFielType == Date.class) {
        if (pValue.getClass() == Date.class) {
          returnedValue = pValue;
        } else {
          if (pValue.getClass() == String.class) {
            if (!((String)pValue).trim().equals("")) {
              try {
                returnedValue = new SimpleDateFormat(DataUtils.DATE_FORMAT).parse((String)pValue);
              } catch (Exception e) {
                e.printStackTrace();
                returnedValue = pValue;
              }
            }
          } else {
            if (!((String)pValue).trim().equals("")) {
              try {
                returnedValue = new SimpleDateFormat(DataUtils.DATE_FORMAT).parse(pValue.toString());
              } catch (Exception e) {
                e.printStackTrace();
                returnedValue = pValue;
              }
            }
          }
        }
      } else {
        returnedValue = pValue;
      }
    }
    
    return returnedValue;
  }
  
  /**
   * Get Entity property value.
   * @param pBinding
   * @param pEntity
   * @param pView
   * @param pDirection
   * @return
   * @throws IllegalArgumentException
   * @throws IllegalAccessException
   * @throws java.lang.reflect.InvocationTargetException
   * @throws InstantiationException 
   * @throws com.mobandme.ada.exceptions.InaccessibleFieldException
   */
  private Object getBindingValue(DataBinding pBinding, Entity pEntity, View pView, int pDirection) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, InstantiationException, InaccessibleFieldException {
    Object returnedValue = null;
    
    if (pView != null) {
      if (pEntity != null) {
        if (pDirection == BINDING_ENTITY_TO_UI) {
          try {
            if (pBinding.getterMethod != null) {
              returnedValue = pBinding.getterMethod.invoke(pEntity, (Object[])null);
            } else {
              returnedValue = pBinding.EntityField.get(pEntity);
            }
          } catch (IllegalAccessException e) {
            if (pBinding.getterMethod != null) {
              throw new InaccessibleFieldException(pEntity.getClass().getName(), pBinding.EntityField.getName(), pBinding.getterMethod.getName());
            } else {
              throw new InaccessibleFieldException(pEntity.getClass().getName(), pBinding.EntityField.getName(), "");
            }
          }
        } else if (pDirection == BINDING_UI_TO_ENTITY) {
          if (pView instanceof CheckBox) {
            returnedValue = ((CheckBox)pView).isChecked();
          } else if (pView instanceof SeekBar) {
            returnedValue = ((SeekBar)pView).getProgress();
          } else if (pView instanceof ProgressBar) {
            returnedValue = ((ProgressBar)pView).getProgress();
          } else if (pView instanceof ImageView) {
            BitmapDrawable drawable = (BitmapDrawable)((ImageView)pView).getDrawable();
            if (drawable != null)
              returnedValue = drawable.getBitmap();
          } else if (pView instanceof RatingBar) {
            returnedValue = ((RatingBar)pView).getRating();
          } else if (pView instanceof RadioButton) {
            returnedValue = ((RadioButton)pView).isChecked();
          } else if (pView instanceof ToggleButton) {
            returnedValue = ((ToggleButton)pView).isChecked();
          } else if (pView instanceof Button) {
            returnedValue = ((Button)pView).getText().toString();
          } else if (pView instanceof TextView) {
            returnedValue = ((TextView)pView).getText().toString();
          } else if (pView instanceof EditText) {
            returnedValue = ((EditText)pView).getText().toString();
          }
        }
      }
    }
    
    if (pBinding.Parser != null) {
      Object dataParser = pBinding.Parser.newInstance();
      if (dataParser != null) {
        if (dataParser instanceof DataParser) {
          returnedValue = ((DataParser)dataParser).parseValue(returnedValue, pDirection);
        }
      }
    }
    
    return returnedValue;
  }
  
  /**
   * Set Entity property value.  
   * @param pBinding
   * @param pEntity
   * @param pView
   * @param pDirection
   * @param pValue
   * @throws IllegalArgumentException
   * @throws IllegalAccessException
   * @throws java.lang.reflect.InvocationTargetException
   * @throws com.mobandme.ada.exceptions.AdaFrameworkException
   */
  private void setBindingValue(DataBinding pBinding, Entity pEntity, View pView, int pDirection, Object pValue) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, AdaFrameworkException {
    if (pView != null) {
      if (pEntity != null) {
        if (pDirection == BINDING_UI_TO_ENTITY) {
          
          try {
            if (pBinding.setterMethod != null) {
              pBinding.setterMethod.invoke(pEntity, parseValue(pBinding, pValue));
            } else {
              pBinding.EntityField.set(pEntity, parseValue(pBinding, pValue));
            }
          } catch (IllegalAccessException e) {
            if (pBinding.getterMethod != null) {
              throw new InaccessibleFieldException(pEntity.getClass().getName(), pBinding.EntityField.getName(), pBinding.getterMethod.getName());
            } else {
              throw new InaccessibleFieldException(pEntity.getClass().getName(), pBinding.EntityField.getName(), "");
            }
          } catch (Exception e) {
            throw new AdaFrameworkException(e);
          }
          
        } else if (pDirection == BINDING_ENTITY_TO_UI) {
          if (pView instanceof CheckBox) {
            if (pValue != null) {
              if (pValue instanceof Boolean) {
                ((CheckBox)pView).setChecked((Boolean)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Boolean.class.getName(), pBinding.EntityField.getType().getName()));
              }
            }
          } else if (pView instanceof SeekBar) {
            if (pValue != null) {
              if (pValue instanceof Integer) {
                ((SeekBar)pView).setProgress((Integer)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Integer.class.getName(), pBinding.EntityField.getType().getName()));
              }
            }
          } else if (pView instanceof ProgressBar) {
            if (pValue != null) {
              if (pValue instanceof Integer) {
                ((ProgressBar)pView).setProgress((Integer)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Integer.class.getName(), pBinding.EntityField.getType().getName()));
              }
            }
          } else if (pView instanceof RatingBar) {
            if (pValue != null) {
              if (pValue instanceof Float) {
                ((RatingBar)pView).setRating((Float)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Float.class.getName(), pBinding.EntityField.getType().getName()));
              }
            }
          } else if (pView instanceof ImageView) {
            if (pValue != null) {
              if (pValue instanceof Bitmap) {
                ((ImageView)pView).setImageBitmap((Bitmap)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Bitmap.class.getName(), pBinding.EntityField.getType().getName()));
              }
            } else {
              ((ImageView)pView).setImageBitmap(null);
            }
          } else if (pView instanceof RadioButton) {
            if (pValue != null) {
              if (pValue instanceof Boolean) {
                ((RadioButton)pView).setChecked((Boolean)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Boolean.class.getName(), pBinding.EntityField.getType().getName()));
              }
            }
          } else if (pView instanceof ToggleButton) {
            if (pValue != null) {
              if (pValue instanceof Boolean) {
                ((ToggleButton)pView).setChecked((Boolean)pValue);
              } else {
                throw new AdaFrameworkException(String.format(DataUtils.EXCEPTION_CAST_CONVERSION, Boolean.class.getName(), pBinding.EntityField.getType().getName()));
              }
            }
          } else if (pView instanceof Button) {
            if (pValue instanceof String) {
              ((Button)pView).setText((String)pValue);
            } else {
              if (pValue != null) {
                ((Button)pView).setText(pValue.toString());
              } else {
                ((Button)pView).setText("");
              }
            }
          } else if (pView instanceof TextView) {
            if (pValue instanceof String) {
              ((TextView)pView).setText((String)pValue);
            } else {
              if (pValue != null) {
                ((TextView)pView).setText(pValue.toString());
              } else {
                ((TextView)pView).setText("");
              }
            }
          } else if (pView instanceof EditText) {
            if (pValue instanceof String) {
              ((EditText)pView).setText((String)pValue);
            } else {
              if (pValue != null) {
                ((EditText)pView).setText(pValue.toString());
              } else {
                ((EditText)pView).setText("");
              }
            }
          }
        }
      }
    }
  }
  
  /**
   * Execute the Data Binding logic.
   * @param pView
   */
  public void bind(DataBinding pBinding, Entity pEntity, View pView, int pDirection) throws AdaFrameworkException {
    if (pDirection == BINDING_ENTITY_TO_UI || pDirection == BINDING_UI_TO_ENTITY) {
      
      try {
        
        if (pView != null) {
          Object value = getBindingValue(pBinding, pEntity, pView, pDirection);
          setBindingValue(pBinding, pEntity, pView, pDirection, value);
        }
        
      } catch (Exception e) {
        throw new AdaFrameworkException(e);
      }
        
    } else {
      throw new AdaFrameworkException("Invalid databinding direction, please use BINDING_ENTITY_TO_UI or BINDING_UI_TO_ENTITY.");
    }    
  }
}
Java Source Code List
